InChI=1S/C22H31NO7S/c1-17(2)15-23-22(24)14-19(30-31(25,26)27)10-8-6-4-3-5-7-9-18-11-12-20-21(13-18)29-16-28-20/h7-13,17,19H,3-6,14-16H2,1-2H3,(H,23,24)(H,25,26,27)/b9-7+,10-8+